mirror of
https://github.com/c64scene-ar/llvm-6502.git
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72062f5744
This patch adds support for AArch64 (ARM's 64-bit architecture) to
LLVM in the "experimental" category. Currently, it won't be built
unless requested explicitly.
This initial commit should have support for:
+ Assembly of all scalar (i.e. non-NEON, non-Crypto) instructions
(except the late addition CRC instructions).
+ CodeGen features required for C++03 and C99.
+ Compilation for the "small" memory model: code+static data <
4GB.
+ Absolute and position-independent code.
+ GNU-style (i.e. "__thread") TLS.
+ Debugging information.
The principal omission, currently, is performance tuning.
This patch excludes the NEON support also reviewed due to an outbreak of
batshit insanity in our legal department. That will be committed soon bringing
the changes to precisely what has been approved.
Further reviews would be gratefully received.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174054 91177308-0d34-0410-b5e6-96231b3b80d8
122 lines
3.8 KiB
LLVM
122 lines
3.8 KiB
LLVM
; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s
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; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -filetype=obj < %s | llvm-objdump -r - | FileCheck --check-prefix=CHECK-RELOC %s
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@general_dynamic_var = external thread_local global i32
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define i32 @test_generaldynamic() {
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; CHECK: test_generaldynamic:
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%val = load i32* @general_dynamic_var
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ret i32 %val
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; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:general_dynamic_var
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; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var
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; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var]
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; CHECK: .tlsdesccall general_dynamic_var
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; CHECK-NEXT: blr [[CALLEE]]
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; CHECK: mrs x[[TP:[0-9]+]], tpidr_el0
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; CHECK: ldr w0, [x[[TP]], x0]
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
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}
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define i32* @test_generaldynamic_addr() {
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; CHECK: test_generaldynamic_addr:
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ret i32* @general_dynamic_var
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; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:general_dynamic_var
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; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var
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; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var]
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; CHECK: .tlsdesccall general_dynamic_var
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; CHECK-NEXT: blr [[CALLEE]]
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; CHECK: mrs [[TP:x[0-9]+]], tpidr_el0
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; CHECK: add x0, [[TP]], x0
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
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}
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@local_dynamic_var = external thread_local(localdynamic) global i32
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define i32 @test_localdynamic() {
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; CHECK: test_localdynamic:
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%val = load i32* @local_dynamic_var
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ret i32 %val
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; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
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; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
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; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
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; CHECK: .tlsdesccall _TLS_MODULE_BASE_
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; CHECK-NEXT: blr [[CALLEE]]
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; CHECK: movz [[DTP_OFFSET:x[0-9]+]], #:dtprel_g1:local_dynamic_var
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; CHECK: movk [[DTP_OFFSET]], #:dtprel_g0_nc:local_dynamic_var
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; CHECK: ldr w0, [x0, [[DTP_OFFSET]]]
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
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}
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define i32* @test_localdynamic_addr() {
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; CHECK: test_localdynamic_addr:
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ret i32* @local_dynamic_var
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; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
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; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
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; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
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; CHECK: .tlsdesccall _TLS_MODULE_BASE_
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; CHECK-NEXT: blr [[CALLEE]]
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; CHECK: movz [[DTP_OFFSET:x[0-9]+]], #:dtprel_g1:local_dynamic_var
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; CHECK: movk [[DTP_OFFSET]], #:dtprel_g0_nc:local_dynamic_var
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; CHECK: add x0, x0, [[DTP_OFFSET]]
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
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; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
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; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
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}
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; The entire point of the local-dynamic access model is to have a single call to
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; the expensive resolver. Make sure we achieve that goal.
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@local_dynamic_var2 = external thread_local(localdynamic) global i32
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define i32 @test_localdynamic_deduplicate() {
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; CHECK: test_localdynamic_deduplicate:
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%val = load i32* @local_dynamic_var
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%val2 = load i32* @local_dynamic_var2
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%sum = add i32 %val, %val2
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ret i32 %sum
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; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
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; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
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; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
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; CHECK: .tlsdesccall _TLS_MODULE_BASE_
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; CHECK-NEXT: blr [[CALLEE]]
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; CHECK-NOT: _TLS_MODULE_BASE_
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; CHECK: ret
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}
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